Mesh imported from DazStudio always render as pure black
This hair is not a &quot;hair&quot; made with Blender: Blender does not recognize it as hair. This is simply edges and edges cannot be shaded without faces.
Enter edit mode, select all A and give a very little extrusion E to the mesh (less than a millimeter or around that).
In the shader part, change the &quot;hair BSDF&quot; by a &quot;Principled&quot; shader.